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Table 6 The mean VTA of different motor symptom improvement rate groups in the MNI space [M (IQR), mm3]

From: Relationship between electrode position of deep brain stimulation and motor symptoms of Parkinson’s disease

Group Number of cases Left Right
STN motor subregion STN associative subregion STN limbic subregion STN motor subregion STN associative subregion STN limbic subregion
Improvement rates < 25% group 5 12.9 (16.6) 9.1 (13.6) 10.6 (9.5) 15.6 (5.3) 5.6 (7.4) 15.7 (8.8)
Improvement rates 25–50% group 11 18.2 (6.3) 15.5 (8.0) 15.6 (10.0) 16.2 (8.0) 12.1 (9.9) 15.2 (5.1)
Improvement rates > 50% group 41 20.1 (13.0) 13.4 (8.3) 14.7 (8.2) 17.1 (10.8) 8.6 (9.9) 12.6 (10.1)
Kruskal-Wallis χ2   1.129 1.544 0.140 0.958 3.945 3.613
P   0.569 0.462 0.933 0.619 0.139 0.164